<template>
  <div class="login_container">
    <div class="login_box">
      <div class="avatar_box">
        <img src="../../assets/logo.png" alt="" />
      </div>

      <el-form
        class="login_form"
        ref="loginFormRef"
        :model="loginForm"
        :rules="loginFormRules"
        label-width="100px"
      >
        <el-form-item prop="username" label="用户名：">
          <el-input
            v-model="loginForm.username"
            prefix-icon="iconfont icon-user"
          ></el-input>
        </el-form-item>

        <el-form-item prop="password" label="密码：">
          <el-input
            v-model="loginForm.password"
            type="password"
            prefix-icon="iconfont icon-3702mima"
          ></el-input>
        </el-form-item>

        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="resetLoginForm">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      loginForm: {
        username: 'admin',
        password: '123456'
      },
      loginFormRules: {
        username: [
          {
            required: true,
            message: '请输入用户名',
            trigger: 'blur'
          },
          { min: 2, max: 10, message: '长度在 2 到 10 个字符', trigger: 'blur' }
        ],
        password: [
          {
            required: true,
            message: '请输入密码',
            trigger: 'blur'
          },
          { min: 6, max: 15, message: '长度在 3 到 15 个字符', trigger: 'blur' }
        ]
      }
    }
  },
  methods: {
    resetLoginForm() {
      this.$refs.loginFormRef.resetFields()
    },
    login() {
      this.$refs.loginFormRef.validate((async valid => {
        if(!valid) return
        const { data: res } = await this.$http.post('login', this.loginForm)
        if(res.meta.status !== 200) return this.$message.error('登录失败！')
        this.$message.success('登录成功！')

        window.sessionStorage.setItem('token', res.data.token)
        this.$router.push('/home')
      }))
    }
  },
}
</script>

<style lang="less" scoped>
.login_container {
  position: relative;
  background-color: #2b4b6b;
  height: 100%;

  .login_box {
    width: 450px;
    height: 300px;
    background-color: #fff;
    border-radius: 3px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);

    .avatar_box {
      height: 130px;
      width: 130px;
      border: 1px solid #eee;
      border-radius: 50%;
      padding: 10px;
      box-shadow: 0 0 10px #ddd;
      position: absolute;
      left: 50%;
      transform: translate(-50%, -50%);
      background-color: #fff;

      img {
        width: 100%;
        height: 100%;
        border-radius: 50%;
        background-color: #eee;
      }
    }

    .login_form {
      position: absolute;
      bottom: 0;
      left: 0;
      right: 0;
      padding: 0 15px;

      .btns {
        display: flex;
        justify-content: flex-end;
      }
    }
  }
}
</style>
